My dad just brought a 2002 Town and Country. We have no clue of the previous owners maintenance habits. I plan on changing the oil the Supertech 5w-30 and adding in MMO as the last quart. Then I plan on running it for around 3k to 5k miles. My question is...Since I really can't afford arx right now (and that would be my first choice over everything else) would it be ok to run a full oci with MMO?